The imidazole ring has two atoms of this element, and a benzene analogue called borazine contains alternating atoms of boron and this element. In one 
The imidazole ring has two atoms of this element, and a benzene analogue called borazine contains alternating atoms of boron and this element. In one context, the single bond from a carbonyl carbon to an atom of this element is called a peptide bond. One class of phase transfer catalysts is quaternary amines, which contain this element. This element's diatomic form has a triple bond that is broken in the "fixation" of it performed by bacteria. For 10 points, name this element whose diatomic form makes up the majority of the air we breathe.
The imidazole ring has two atoms of this element, and a benzene analogue called borazine contains alternating atoms of boron and this element.
nitrogen